Page Object Model in SeleniumRC
I have created different Java classes in eclipse. I have created a main class to call the methods of different classes. It is working fine. But now i want to implement Page Object Model into this by returning page object from each class. I don't know how exactly we do this.
Can any one help me out of this???
Thanks in advance.
Page object pattern is pretty simple, it basically consists of 3 things.
1) Self validation of a page when given an automation driver.
2) The Object containing a dictionary or member variables that keep track of elements on this page. (A Object map as you will)
3) Method/Function calls that expose functionality on a transactional level, so you can hide the details of the UI interactions inside your page object.
4) (Optional) A factory for constructing an abstract way of creating your pages.
I've written a short article explaining my reasoning when implementing a quick and dirty page object in Python
Although Java does not have lambda functions, the same can be achieved using a static dictionary of locators, and a base PageObject class have a method that returns locators if the element exists (or throw error if it doesn't), which your child PageObjects can inherit.
As for #4, I've written an article of how to create a simple Generic Page Factory in Java. (although this was meant for webdriver)
Last edited by dlai; 01-15-2013 at 10:15 AM.
That site does a good job of explaining the basics. But it also over simplifies and dumbs down the PageObject pattern. The real power of PageObjects in Java comes from a lot of the handy FindBy annotations, as well as usage of proxy classes to break pages down into page components, and leveraging inheritance to support 1 off variations.
Originally Posted by tarun kumar
All the abstraction benefits are lost when you use direct instantiation of PageObjects, vs. using a PageFactory, but the PageFactory that comes with WebDriver does not work with generics and interaces. So the true usefulness of the factory pattern is lost.
Is there a very simple explanation for the Page object model in Selenium (for beginners i.e.)
Would you be able to break it down?
I'm sure what the best level to explain Page objects as. if you're heard of the MVC, File:MVC-Process.png - Wikipedia, the free encyclopedia,
Think of the page object as MVC in reverse.
So instead of seeing the view, selenium is interacting with the view, instead of modeling data, we're modeling behavior. So instead of having a Model - View- Controller, our tests will take a form of.. High Level Tests (Behavioral Model, given this, we expect that); Application Under Test (this is what we see); Controller (Page Object, this translates our behavioral call into UI actions)
The main thing to know is you're separating expected behavior from the UI details of your AUT. This allows you to make your tests more maintainable and readable, the same thing that MVC does to app development.
Last edited by dlai; 03-19-2013 at 04:12 PM.
Ohhh right David, i kinda get it now u mean its similar to Design patterns traditionally being used for app development MVC/MVP etc
I will try to dig up further into this